Indian capital starts trial where cars will only able to operate on alternate days, depending on their license numbers.
Mexico City is taking drastic measures to tackle its first environmental emergency in 14 years.
Private cars must now remain off the roads for one day a week, and one Saturday each month, in the Mexican capital.
“How can I agree with the policy when so many people are going to be left without a way of getting around?” one man told Al Jazeera.
And environmental groups such as Greenpeace say that such a programme is not a long-term solution to the peak levels of pollution not seen in the city since the 1980s.
These critics say that this car-limiting programme does not address other factors contributing to the pollution, such as factories.
Al Jazeera’s Natasha Ghoneim reports.